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https://issues.apache.org/jira/browse/HDFS-14887?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16948316#comment-16948316
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Takanobu Asanuma commented on HDFS-14887:
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{quote}BTW, can you share your experience with RBF and Observer NNs?
{quote}
In my experience, Router doesn't send any read requests to Observer NNs now
(even after this jira) . IIUC, HDFS-13522 is addressing it.
> RBF: In Router Web UI, Observer Namenode Information displaying as Unavailable
> ------------------------------------------------------------------------------
>
> Key: HDFS-14887
> URL: https://issues.apache.org/jira/browse/HDFS-14887
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: hemanthboyina
> Assignee: hemanthboyina
> Priority: Major
> Attachments: 14887.after.png, 14887.before.png, HDFS-14887.001.patch
>
>
> In Router Web UI, Observer Namenode Information displaying as Unavailable.
> We should show a proper icon for them.
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